BMW K 100 RS
| BMW | |
|---|---|
 Year of construction 1986 |
|
| K 100 RS | |
| Manufacturer | BMW |
| Sales description | K 100 RS |
| Production period | 1982 to 1993 |
| class | motorcycle |
| design type | Tourer |
| Motor data | |
| Water-cooled in- line engine with four cylinders | |
| Displacement (cm³) | 987 |
| Power (kW / PS ) | 66/90 at 8000 min -1 |
| Torque ( N m ) | 86 at 6000 min -1 |
| Top speed ( km / h) | 215 |
| transmission | 5-speed |
| drive | Cardan drive |
| Brakes | front Ø 285 mm double disc brake, rear Ø 285 mm disc brake |
| Wheelbase (mm) | 1516 |
| Dimensions (L × W × H, mm): | 2220 × 920 × 1155 |
| Seat height (cm) | 83 |
| Empty weight (kg) | 253 |
| successor | BMW K 100 RS 4V |
The BMW K 100 RS is a touring and sports motorcycle from BMW with a four-cylinder in- line engine . The abbreviation RS stands for racing .
General
The motorcycle is the top model and the touring (travel) sports motorcycle of the K 100 series.In addition to the equipment of the basic version BMW K 100 , the RS is equipped with an aerodynamically optimized full fairing in the wind tunnel with a low windshield and side-mounted rear-view mirrors with integrated indicator lights. (The sister model RT with otherwise largely the same data has a high touring windshield on a slightly modified full fairing.)
The K 100 RS was replaced by the K 100 RS 4V in 1989. Since 1988 the RS has been available with an anti-lock braking system (approx. 10 kg additional weight). Some versions of the K 100 RS have been upgraded with performance-enhancing Luftmeister turbochargers; The engine and chassis coped with this technical upgrade without any significant problems.
production
BMW invested 250 million marks from 1980 to 1983 in the modernization of motorcycle production, another 200 million followed by 1986. From 1983 to 1989 the K 100 RS was built 34,335 times at the BMW plant in Berlin in Spandau .
Technical data (model year 1989)
drive
The liquid-cooled four - cylinder engine generates a nominal output of 66 kW (90 hp) and a maximum torque of 86 Nm at a speed of 6000 min −1 from a displacement of 987 cm³ . The four cylinders of the longitudinally installed in- line engine have a 67 mm diameter bore . The piston stroke of the four-stroke engine is 70 mm with a compression ratio of 10.2: 1. The engine block is made of a light metal alloy and weighs 76.5 kg. An automatic fuel cut is reduced up to a speed of 2000 min -1 fuel consumption. The speed limitation of the engine control reduces the ignition point from 8600 min −1 and switches off the fuel injection above a speed of 8750 min −1 in order to avoid engine damage due to overspeeding.
The motorcycle accelerates from 0 to 100 km / h in 4.3 seconds and reaches a top speed of 215 km / h. The braking distance from 100 km / h to a standstill is 46.5 m with an average deceleration of 8.3 m / s². The specific power-to-weight ratio is 3.77 kg / kW.
engine
- Two valves per cylinder
- electronic injection ( Bosch LE-Jetronic )
- Wet sump lubrication
- electronic ignition control
- Battery: 12 volts / 25 Ah
- Alternator: 460 watts
- Starter: 700 watts
Power transmission
- Single-disc dry clutch
- foot-operated five-speed gearbox with dog clutch
- Gear ratios 4.50 / 2.96 / 2.30 / 1.88 / 1.61: 1
- Rear axle ratio 1: 2.81 (11: 31 teeth)
landing gear
- Space frame , load-bearing motor
- front telescopic fork with hydraulic shock absorbers and 185 mm suspension travel
- rear BMW Monolever single-sided swing arm with cardan drive, 110 mm suspension travel
- Light alloy cast wheels; Rim size front 2.50 × 18, rear 2.75 × 17
- Brakes: front double disc brakes 285 mm, rear single disc brake 285 mm
mass and weight
- Weight with a full tank: 253 kg
- permissible total weight: 480 kg
- Tank capacity: 22 l
criticism
“So far, no other two-wheeler manufacturer has come up with the idea of installing a flat four-cylinder in a motorcycle. Possible visual disadvantages - the K 100 takes getting used to, no different from the boxer engine 60 years ago - BMW accepts: The unit is unusually maintenance-friendly and gives the machine a low center of gravity. Comrades appreciate this because it increases handiness and driving stability. "
Trivia
In the road movie Bic Mäc of Sigi Rothemund from 1985 drives Thomas Gottschalk on a BMW K100 RS an adventure rally from the Zugspitze to Kilimanjaro . The motorcycle is very present thanks to the extensive BMW product placement .
literature
- Jeremy Churchill, Penny Cox: BMW K 75 and 100. Two-valve in-line engines. (= Haynes maintenance and repair ). 1st edition. Moby Dick, Kiel 1999, ISBN 3-89595-132-3 .
- Norbert Kappes: The “brick” turns 30 - so what? Purchase advice BMW K 100 . In: Oldtimer Market . No. November 11 , 2012, ISSN 0939-9704 , p. 198-203 .
- Hans-Jürgen Schneider, Axel Königsbeck: Fascination with the BMW K series . Schneider Text, 2008, ISBN 978-3-7688-5791-8 .
Web links
- The BMW K-Series on the Internet. Private homepage of a fan base for the BMW K series, accessed on January 5, 2013 .
Individual evidence
- ↑ a b Werner Koch: The history of the K. In: Motorcycle , edition 02/2004. January 1, 2004, accessed December 2, 2013 .
- ↑ K100 conversions ( Memento of the original from June 25, 2012 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. . In: flyingbrick.de .
- ↑ a b c d Teutonic bull . In: Der Spiegel . No. 39 , 1983, pp. 279-281 ( online ).
